21255584

素因数分解:

$2^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3061}}^1$

素因数の和:3109

約数の個数: 48

約数和(自身を含む): 49383936

約数和(自身を除く): 28128352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 112, 124, 217, 224, 248, 434, 496, 868, 992, 1736, 3061, 3472, 6122, 6944, 12244, 21427, 24488, 42854, 48976, 85708, 94891, 97952, 171416, 189782, 342832, 379564, 664237, 685664, 759128, 1328474, 1518256, 2656948, 3036512, 5313896, 10627792, 21255584]

約数ペア:

[(1, 21255584), (2, 10627792), (4, 5313896), (7, 3036512), (8, 2656948), (14, 1518256), (16, 1328474), (28, 759128), (31, 685664), (32, 664237), (56, 379564), (62, 342832), (112, 189782), (124, 171416), (217, 97952), (224, 94891), (248, 85708), (434, 48976), (496, 42854), (868, 24488), (992, 21427), (1736, 12244), (3061, 6944), (3472, 6122)]